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<b><img src="images/fold.gif" />用户管理系统</b>
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<img src="images/fclose.gif" /><a href="javascript:showMenu()">用户管理</a></li>
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<ul id="m">
  <li><img src="images/doc.gif"/>新增用户</li>
  <li><img src="images/doc.gif"/>修改用户</li>
  <li><img src="images/doc.gif"/>删除用户</li>
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